.box3 {
    padding: 50px 50px;
}

.box4 {
    width: 800px;
    height: 70px;
    /*margin-left: 65px;*/
    margin-top: 10px;
    /*background-color: #f00;*/
}

.box4 ul {
    font-size: 16px;
    text-align: center;
}

.box4 ul li {
    display: inline-block;
    padding: 12px 20px;
    border: 1px solid #666;
}

.box4 ul li:hover {
    background-color: #00e1ff;
}

.box4 ul li:hover a {
    color: #fff;
}

.box4 ul li:first-child {
    float: left;
}
.box4 ul li:last-child {
    float: right;
}